6-5-2

Minima on Diverging Radials

JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov

Consider separation to exist between aircraft:
1. Established on radials of the same NAVAID that diverge by at least 15 degrees when either aircraft is clear of the airspace to be protected for the other aircraft.
2. With non-VOR/DME based navigational equipment established on tracks of the same waypoint that diverge by at least 15 degrees when either aircraft is clear of the airspace to be protected for the other aircraft.
  FIG 6-5-1 Minima on Diverging Radials
  
  Note
  
  The procedure may be applied to converging as well as diverging aircraft. (See FIG 6-5-1.) The aircraft depicted 6 miles from the NAVAID/waypoint would require vertical separation until reaching the 6-mile point. Reversing direction, the same aircraft would require vertical separation before passing the 6-mile point. Due to the nature of GPS equipment, issue crossing restrictions in reference to the next waypoint, since the pilot receives tracking “to” data rather than tracking “from” the last waypoint.

Use TBL 6-5-1 and TBL 6-5-2 to determine the distance required for various divergence angles to clear the airspace to be protected. For divergence that falls between two values, use the lesser divergence value to obtain the distance.

**TBL 6-5-1** Non-DME Divergence Distance Minima
Divergence (Degrees)	Distance (NM)
15	16
20	12
25	10
30	8
35	7
45	6
55	5
90	4
*NOTE:* This table is for non-DME application only.

**TBL 6-5-2** Divergence Distance Minima
Divergence (Degrees)	Distance (NM)
	Below FL 180	FL 180 through FL 450
15	17	18
20	13	15
25	11	13
30	9	11
35	8	11
45	7	11
55	6	11
90	5	11
*NOTE:* This table is for DME application and compensates for DME slant‐range error.